• To prepare for the operation, doctors at the hospital sent data gathered from CT and MRI scans to a 3D printing company, which then built two models of the girls' conjoined body parts.
  • In 2014, surgeons in the United States used a 3D printer to make a model of a two-week-old baby's heart, which was full of holes and had an unusual chamber layout. Doctors said the 3D model acted like a "road map", allowing them to examine the heart's structure ahead of the surgery.
  • Surgeons say the resulting replica gave them a better understanding of exactly how to tackle the operation.

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